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Williamson-Reisdorph CM, Quindry TS, Christison KS, Gurney SC, Tiemessen KG, Cuddy J, Hailes W, Slivka D, Ruby BC, Quindry JC. Training in a Hot Environment Fails to Elicit Changes in the Blood Oxidative Stress Response. J Hum Kinet 2023; 87:81-92. [PMID: 37229416 PMCID: PMC10203834 DOI: 10.5114/jhk/161586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 11/14/2022] [Indexed: 05/27/2023] Open
Abstract
Environmental temperature can impact exercise-induced blood oxidative stress; however, the effects of heat acclimation on this response have not been fully elucidated. The purpose of the study was to investigate the effects of hot (33°C) and room temperature (20°C) environments on post-exercise blood oxidative stress responses following 15 temperature acclimation sessions. Untrained participants (n = 38, 26 ± 7 years, VO2peak = 38.0 ± 7.2 years) completed 15 temperature acclimation sessions of a cycling bout at an intensity perceived as "hard" in either a hot (33°C) or room temperature (20°C) environment. Pre and post acclimation exercise tolerance trials were conducted, which involved cycling at 50% Wpeak for one hour. Blood sampling occurred before exercise, immediately after, two hours, and four hours after the exercise tolerance trials. Blood samples were analyzed for oxidative stress markers including lipid hydroperoxides, 8-isoprostanes, protein carbonyls, 3-nitrotyrosine, ferric-reducing ability of plasma, and Trolox-equivalent antioxidant capacity. Exercise-dependent increases were observed in lipid hydroperoxides, Trolox-equivalent antioxidant capacity, and ferric-reducing ability of plasma (p < 0.001). Considering exercise-induced elevations in markers of blood oxidative stress, there were no differences observed between environmental temperatures before or after the acclimation training period.
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Affiliation(s)
| | - Tiffany S. Quindry
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Katherine S. Christison
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Shae C. Gurney
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Kathryn G. Tiemessen
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - John Cuddy
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Walter Hailes
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Dustin Slivka
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - Brent C. Ruby
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
| | - John C. Quindry
- School of Integrative Physiology and Athletic Training, University of Montana, Missoula, MT, USA
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Sol JA, Quindry JC. Application of a Novel Collection of Exhaled Breath Condensate to Exercise Settings. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19073948. [PMID: 35409631 PMCID: PMC8997655 DOI: 10.3390/ijerph19073948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 02/04/2023]
Abstract
The collection of exhaled breath condensate (EBC) is a non-invasive method for obtaining biosamples from the lower respiratory tract, an approach amenable to exercise, environmental, and work physiology applications. The purpose of this study was to develop a cost-effective, reproducible methodology for obtaining larger volume EBC samples. Participants (male: n = 10; female: n = 6; 26 ± 8 yrs.) completed a 10 min EBC collection using a novel device (N-EBC). After initial collection, a 45 min bout of cycling at 75% HRmax was performed, followed by another N-EBC collection. In a subset of individuals (n = 5), EBC was obtained using both the novel technique and a commercially available EBC collection device (R-EBC) in a randomized fashion. N-EBC volume—pre- and post-exercise (2.3 ± 0.8 and 2.6 ± 0.9 mL, respectively)—and pH (7.4 ± 0.5 and 7.4 ± 0.5, respectively) were not significantly different. When normalized for participant body height, device comparisons indicated N-EBC volumes were larger than R-EBC at pre-exercise (+12%) and post-exercise (+48%). Following moderate-intensity exercise, no changes in the pre- and post-trial values of Pentraxin 3 (0.25 ± 0.04 and 0.26 ± 0.06 pg/mL, respectively) and 8-Isoprostrane (0.43 ± 0.33 and 0.36 ± 0.24 pg/mL, respectively) concentrations were observed. In a cost-efficient fashion, the N-EBC method produced larger sample volumes, both pre- and post-exercise, facilitating more biomarker tests to be performed.
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